Kubota 7800 won't start

[JoeL4330]

as you say in your post, it was running, you hopped off and it stopped ...which shows the seat safety switch was working as designed ...your tractor (correctly) sensed "no operator presence" but incorrectly sensed either PTO engagement or forward/reverse (i.e., non-neutral) drive situation. From what the 7800 owners have posted it is most likely the F/R rocker pedal not signalling neutral.

 

[herringchoker]

I was reading this thread a few days ago and thinking I haven't had a problem with my B7800 in the 5-1/2 years since I got it. Well, today I went to trailer it home from the woodlot for winter snowblowing duties and it happened - I got off the seat and the motor quit and then the starter would not engage. Remembering this thread, I crawled underneath, disconnected the go pedal safety switch and put a jumper across the harness side of the plug. Eureka - it started and I was able to load the tractor and get it home into the garage to repair.

I removed the right rear wheel for easy (well, easier) access to the switch. Like chiggerbait, I found the switch had got misaligned (because the adjusting/retaining nut had worked loose) so the plunger was missing the switch pin. I tightened the nut (hard to do on mine because the hydraulic hoses for the rear remotes are in the way), and while I was there I also did like ptrotter and sprayed WD40 into the plunger tube. Everything is now good again.

Ain't TBN great?

 

[Dr. Bob]

Herringchoaker:
Thanks for the pictures. They are the best I have seen in a long time since they identify the parts with names and arrows.
It is also nice to have a thread that deals with the B7800, a great little tractor.

 

[allenp]

Herringchoaker:

I see a few extra hoses in the pics; do you have rear remotes on your B7800?

 

[crbr]

Herringchoaker:

I see a few extra hoses in the pics; do you have rear remotes on your B7800?

...I tightened the nut (hard to do on mine because the hydraulic hoses for the rear remotes are in the way), .......
Ain't TBN great?

........

 

[herringchoker]

I have dual rear remotes, all I've used them for so far is the chute rotation and deflector on the snowblower.

 

[shellyh]

I was reading this thread a few days ago and thinking I haven't had a problem with my B7800 in the 5-1/2 years since I got it. Well, today I went to trailer it home from the woodlot for winter snowblowing duties and it happened - I got off the seat and the motor quit and then the starter would not engage. Remembering this thread, I crawled underneath, disconnected the go pedal safety switch and put a jumper across the harness side of the plug. Eureka - it started and I was able to load the tractor and get it home into the garage to repair.

I removed the right rear wheel for easy (well, easier) access to the switch. Like chiggerbait, I found the switch had got misaligned (because the adjusting/retaining nut had worked loose) so the plunger was missing the switch pin. I tightened the nut (hard to do on mine because the hydraulic hoses for the rear remotes are in the way), and while I was there I also did like ptrotter and sprayed WD40 into the plunger tube. Everything is now good again.

Ain't TBN great?

My Husband Just wanted me to thank you for your Post and pictures this helped him after a week of problems now He has it running!

 

[herringchoker]

You're most welcome, but it was a group effort...I was just adding to what I learned from others here. That's the great thing about this TBN website...we all help each other out. Glad he was able to get going again. :thumbsup:

 

[RichtersDad]

Thanks for the pictures herringchoker - they saved my sanity.

 

[herringchoker]

Wow! I'm usually causing people to lose their sanity!